kernel-packages team mailing list archive

[Stasia <scani@xxxxxxx>]

There is a workaround that worked for me:

You should use the kernel parameter: "intel_idle.max_cstate=1"

do these steps:

1. sudo nano /etc/default/grub
2. There is a line in that: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" (like this), replace with: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=1"
Save it (CTRL+O)
3. sudo update-grub
4. sudo reboot

Your CPU will be a little warmer.

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https://bugs.launchpad.net/bugs/1511019

Title:
  Ubuntu 15.10 freezes occasionally

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Lenovo G50-30 WIly 15.10 freezes! 
  More often when I use touchpad, less with a mouse. Always freezes when streaming a video from youtube in the browser or Totem player. Keyboard is inactive after the freeze so nothing helps only reboot. Also happened in 15.04. 

  After several reboots like that it's impossible to switch off the
  laptop from OS interface - it hangs on and on and I finally have to
  press switch-off button.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-16-generic 4.2.0-16.19 [modified: boot/vmlinuz-4.2.0-16-generic]
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  scani      1445 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Oct 28 18:16:52 2015
  HibernationDevice: RESUME=UUID=a94e1d4b-d122-47cb-86a9-9090d0b0bda4
  InstallationDate: Installed on 2015-10-24 (3 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: LENOVO 80G0
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic.efi.signed root=UUID=8af48aa3-e87a-482f-9e46-6d3ca072423d ro noprompt persistent quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-16-generic N/A
   linux-backports-modules-4.2.0-16-generic  N/A
   linux-firmware                            1.149
  SourcePackage: linux
  UdevLog: Error: [Errno 2] Нет такого файла или каталога: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/18/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: A7CN40WW
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: Lancer 5A6
  dmi.board.vendor: LENOVO
  dmi.board.version: NANANANANO DPK
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo G50-30
  dmi.modalias: dmi:bvnLENOVO:bvrA7CN40WW:bd07/18/2014:svnLENOVO:pn80G0:pvrLenovoG50-30:rvnLENOVO:rnLancer5A6:rvrNANANANANODPK:cvnLENOVO:ct10:cvrLenovoG50-30:
  dmi.product.name: 80G0
  dmi.product.version: Lenovo G50-30
  dmi.sys.vendor: LENOVO

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